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 | [[File:LPG.JPG]]    |  | [[File:LPG.JPG]]    | 
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 | we define a concept as an item of knowledge for describing the subject domain and we create a node to represent each concept.
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 | Concept Path Graph: A concept path graph is a
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 | directed acyclic graph that represents the set of
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 | sequencing rules that determine the order of the
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 | concepts; they should be followed by a list of the
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 | behaviors that the instructional designer intends for the
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 | learner to acquire. The learning goals are used to
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 | define the pattern of the concept path based on the
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 | domain model and user model.
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 | ==References==  |  | ==References==  |